Travel Speed Calculator & Heat Input Calculator To use the Travel Speed calculator, insert the the time taken to complete the weld and the weld length into boxes of formula 1 Next, input your recorded welding Amps and Volts into formula 2 and it will calculate the Heat Input1.TRAVEL SPEED CALCULATOR [Input the time taken & the length of weld]Weld time*secWeld length*mmCalculated Travel Speedmm/min2.HEAT INPUT CALCULATOR [Input Amps, Volts]Amps*Volts*KiloJouleskJ/mm Δ